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Three-way catalyst and preparation method thereof

A three-way catalytic converter and equipment technology, applied in the field of purification, can solve the problems of high temperature resistance, small thermal deformation, poor impact resistance, poor thermal conductivity, etc., and achieve improved bonding strength, simplified molding process, geometric surface area and The effect of high hole density

Active Publication Date: 2017-11-07
广州鑫研锦增材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The metal or ceramic carrier is the core component of the three-way catalytic converter. Under the current conventional technical conditions, the monolithic honeycomb ceramic carrier is generally made of cordierite extrusion. It has the characteristics of high temperature resistance and small thermal deformation, but the disadvantage is heat conduction Poor performance, slow temperature rise, low mechanical strength, poor impact resistance

Method used

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  • Three-way catalyst and preparation method thereof
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  • Three-way catalyst and preparation method thereof

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preparation example Construction

[0035] This embodiment also relates to a preparation method of the three-way catalyst 10. The preparation method of the three-way catalyst 10 includes the following steps:

[0036] According to the design rules, use the computer to design the housing 100 structure of the three-way catalytic converter 10 with the accommodating cavity and the oppositely arranged air inlet and outlet; then use the computer to design the structure of the honeycomb unit 210, the length of the honeycomb column of the honeycomb unit 210 is 1mm, the volume of the honeycomb unit 210 is 1mm 3 ; Then use a computer to design the shell structure 220 of the honeycomb carrier 200; then in 3-matic, use a plurality of honeycomb units 210 to fill the shell structure 220 to form the carrier 200.

[0037] The pore density of the carrier 200 is designed to vary between 400-600 mesh, and from the air inlet to the air outlet, the pore density of the carrier 200 changes from a linear gradient of 600 mesh to 400 mesh.

[0...

Embodiment 1

[0043] Embodiment 1 uses 316L stainless steel metal powder material to manufacture an integrated three-way catalytic converter 10. First, use a computer to design the structure of the housing 100 of the three-way catalytic converter 10 in accordance with the design regulations. The housing 100 has a diameter of 140 mm and a length of 150 mm; see figure 2 As shown, the computer is then used to design the structure of the honeycomb unit 210. The length of the honeycomb column of the honeycomb unit 210 is 1mm, and the volume of the honeycomb unit 210 is 1mm. 3 ; See image 3 As shown, a computer is then used to design the shell structure 220 of the honeycomb carrier 200; see image 3 As shown, then in the 3-matic, a plurality of honeycomb units 210 are used to fill the aforementioned shell structure 220 to form the aforementioned carrier 200. The pore size is adjusted by the scaling ratio of the honeycomb unit structure, and finally the honeycomb from the air inlet to the air outl...

Embodiment 2

[0045] Embodiment 2 uses 310 stainless steel metal powder material to manufacture the integrated three-way catalytic converter 10. First, use a computer to design the structure of the shell 100 of the three-way catalytic converter 10 in accordance with the design rules. The diameter of the shell 100 is 120mm and the length is 150mm; then the computer is used to design the structure of the honeycomb unit 210. The length of the honeycomb column of the honeycomb unit 210 is 1mm. The volume of the honeycomb unit 210 is 1mm 3 ; Then use a computer to design the shell structure 220 of the honeycomb carrier 200; then in 3-matic, use a plurality of honeycomb units 210 to fill the above-mentioned shell structure 220, the pore size is adjusted by the scaling ratio of the honeycomb unit structure, and finally get The pores of the honeycomb carrier 200 from the air inlet to the air outlet vary linearly from 600 mesh to 400 mesh. Then import the computer-designed model of the shell 100 stru...

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Abstract

The invention discloses a three-way catalyst and a preparation method thereof. The three-way catalyst comprises a shell and a carrier. The shell is provided with a containing cavity, an air inlet and an air outlet, wherein the air inlet and the air outlet communicate with the containing cavity and distributed in opposite positions in the shell. A plurality of channels penetrate through one end to the opposite end of the carrier to enable the carrier to be in a honeycomb shape, and the carrier is arranged in the containing cavity. The porosity of the carrier linearly changes from 600 meshes to 400 meshes from the air inlet to the air outlet. The three-way catalyst saves materials, is high in catalytic efficiency, simple in manufacturing process and short in production cycle.

Description

Technical field [0001] The invention relates to the field of purification, in particular to a three-way catalyst and a preparation method thereof. Background technique [0002] The current environmental pollution problem is becoming more and more serious, and the requirements and standards for automobile exhaust emissions in various countries in the world are becoming more and more stringent. In order to meet the specified exhaust emission standards, automobile manufacturers have installed three-way catalytic converters in the automobile exhaust emission system. HC, C0, N0 x The purification of harmful gases, etc., plays a great role in solving the problem of automobile exhaust pollution. [0003] The metal or ceramic carrier is the core component of the three-way catalytic converter. Under the current conventional technical conditions, the monolithic honeycomb ceramic carrier is generally extruded from cordierite. It has the characteristics of high temperature resistance and small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28G06F17/50
CPCF01N3/28G06F30/17
Inventor 佟鑫黄玉山
Owner 广州鑫研锦增材科技有限公司